He produced a small bunch of keys.
"How did they come there ?" cried Monckton, in amazement.
It was an incautious remark.

Bartley took it up directly, and pounced on the keys.

He tried them on the safe.

One opened the safe, another opened the cash-box.
Meantime the detective found some notes in the pocket of the overcoat, and produced them.
"Great heavens!" cried Monckton, "how did they come there ?" "Oh, I dare say you know," said the detective.
Bartley examined them eagerly.

They were the numbered notes.
"You scoundrel," he roared, "these show me where your gold and your other notes came from.